Analisis Perbedaan Abnormal Return Dan Trading Volume Activity Sebelum Dan Sesudah Ramadhan Effect Pada Saham Perfindo I- Grade Yang Terdaftar Di Bursa Efek Indonesia

This research aims to analyzed the differences averages abnormal return and trading volume activity between before-after ramadhan effect on Perfindo i-Grade and Listed in Indonesian Stock Exchange from 2018 to 2021. Sample of this study, were taken 13 companies through purposive sampling techniquees. Methode of this research using The Event Study by Market Adjusted Model used for 15-days before Ramadhan Effect and 15-days after ramadhan effect. Data analyzed hypothesis using Paired Samples Test and Wilxoncon Signed Rank Test. The research finding did not significant of the difference test on average abnormal return full periode or year on year. The research proved that there are significant differences in average trading volume activity before and after ramadhan effect. Futher studies indicated in 2020, have significant of the difference in average trading volume activity before and after ramadhan effect